Income Taxes - Deferred assets and liabilities using the effective statutory tax rate (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Trading securities	$ 289	$ 84
Prepaid expenses	(115)	(142)
Accumulated depreciation	129	120
Available-for-sale securities	366	(176)
Accrued expenses	125	108
Stock-based compensation expense	103	103
Net operating loss carryover	1,051	0
Cumulative eligible capital carryover	76	0
Capital loss carryover	8	252
Charitable contributions carryover	41	35
Valuation Allowance	(2,073)	(35)	$ (27)
Net deferred tax asset	$ 0	$ 349

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible capital loss carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from property, plant, and equipment.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from reserves and accruals.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on available-for-sale securities.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from unrealized losses on trading securities.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax consequences attributable to taxable temporary differences derived from prepaid expenses.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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